Aquarium blog
In-depth answers to the questions fishkeepers search for most, each with worked numbers and a link to the calculator that checks your own tank.
Articles
- How many gallons is a 48x13x21 aquarium?
A 48 x 13 x 21 inch aquarium holds 56.7 US gallons (215 litres) gross — the standard 55-gallon tank. See its real water volume, weight, equipment sizes and stocking ideas.
- What size aquarium is 30x12x12?
A 30 x 12 x 12 inch aquarium is a 20-gallon long, holding 18.7 US gallons (70.8 litres). Compare it with the 20 high and see real volume, weight, equipment and stocking ideas.
- How many litres is a 60x30x30 fish tank?
A 60 x 30 x 30 cm fish tank holds 54 litres (14.3 US gallons) gross and about 40–47 litres of water in practice. See the calculation, weight, heater, filter and stocking ideas.
- How many fish for a 120 litre tank?
How many fish can a 120 litre (32 gallon) aquarium hold? Why the 1 cm per litre rule fails, three proven stocking plans, and which fish to avoid — plus a calculator to check yours.
- How thick should aquarium glass be?
Aquarium glass thickness depends on water height, not volume. See why, a thickness chart for common tank sizes, rimless vs braced tanks, and a free calculator for your exact build.